کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1757105 1523008 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Horizontal well transient rate decline analysis in low permeability gas reservoirs employing an orthogonal transformation method
ترجمه فارسی عنوان
تجزیه و تحلیل کاهش قطر افقی در مخازن گاز با نفوذ پذیری با استفاده از یک روش تحرک متعامد
کلمات کلیدی
تجزیه و تحلیل کاهش نرخ گذرا، افقی خوب، تحولات متعارف، نفوذ پذیری پایین
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
چکیده انگلیسی


• A transient production decline analysis model which considering threshold pressure gradient is proposed.
• Sturm-Liouville eigenvalue method and orthogonal transformation are employed to solve the mathematical model.
• Type curves of production rate and derivate is plotted and five flow regimes of horizontal gas well are recognized.
• The effect of threshold pressure gradient and other relevant influence factors on transient production rate decline are discussed.

Transient rate decline analysis (TRDA) is an important analysis in modern reservoir engineering and applications. Most studies have focused on the threshold pressure gradient (TPG) of low permeability reservoirs and have placed an emphasis on the transient pressure response or steady productivity, whereas transient production decline has not been a focus. This paper presents a transient production decline analysis model of a horizontal well in low permeability gas reservoirs considering the threshold pressure gradient. An accurate solution is determined by employing the Laplace transformation, Sturm-Liouville eigenvalue method, and orthogonal transformation. The bi-logarithmic type curves of dimensionless production and the derivative are plotted by the Stehfest numerical inversion method. Five different flow regimes were recognized, and the effects of the influencing factors, such as the threshold pressure gradient, wellbore storage coefficient, skin factor, horizontal section length, and formation thickness, are discussed. This research contributes to the understanding of transient flow behavior and provides the theoretical basis for efficiently exploiting low permeability reservoirs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Natural Gas Science and Engineering - Volume 33, July 2016, Pages 703–716
نویسندگان
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